Ocean sponges suggest that the Earth has warmed for longer, more than thought; some scientists have doubts
A handful of ancient sponges from deep in the Caribbean are leading some scientists to think that human-induced climate change may have started earlier and warmed the world more than they thought. They calculate that the world has already surpassed the internationally agreed goal of limiting global warming to 1.5 degrees Celsius (2.7 degrees Fahrenheit) … Read more